Adding and listing machine



March 6, 1934. G. J. BARRETT ET AL 3,949,445

ADDING AND LISTING MACHINE Filed Oct. 6, 1832' 5 Sheets-Sheet l a 7 12! w ji 77 20 l 1 March 6, 1934. G. J. BARRETT ET AL 1,949,446

ADDING AND LISTING MACHINE Filed Oct. 6, 1952 5 Sheets-Sheet 2 Imventors Gttornegs a Mam-ch 6, 1934. G. J. BARRETT Er AL 1,949,446

ADDING AND LISTING MACHINE Filed Oct. 6, 1932 5 Sheets-Sheet 5 C(ttornegs March 1934- G. J. BARRETT ET 15L 1,949,446

ADDING AND LISTING MACHINE Filed Oct, 6, 1932 5 Sheets-Sheet 4 Enventors March 6, 1934. G. J. BARRETT ET AL 31199494445 ADDING AND LISTING MACHINE 5 Sheets-Sheet 5 Filed 001;. 5, 1932 Patented M 5, 1934 ADDING AND LISTING MACHINE Glenn J. Barrett, Grand Rapids, Mich, and Charles H. Bruit, Groton, N. Y., alsignora to Portable Adding Machine Company, New York, N. Y., a corporation of Illinois Application October 6, 1932, Serial No. 636,454

13 Claims. '(Cl. 235-) This invention relates to adding and listing machines, and has for its object to provide improved means for effecting operations of the machine for total taking purposes.

The invention consists in the novel constructions and combinations of elements particular- 1y pointed out in the appended claims and hereinafter particularly described with reference to the accompanying drawings which illustrate the preferred embodiment of the invention.

In the drawings:

Fig. 1 is a fragmentary side elevation of the adding machine as viewed from the right, showing principally the control mechanism, with the parts in normal position;

Fig. 2 is a fragmentary vertical longitudinal sectional view of the machine, showing more particularly the adding and listing mechanism, with the parts or the control mechanism in normal position as in 1;

Fig. 3 is a side view, partly in vertical longitudinal section, showing the relation to each other or the parts illustrated in Fig. 1 when the total taking control key is depressed and the main operating handle started a very short distance on its forward throw; or at the point at which hail 10 starts to move; a

Fig. l is a fragmentary side elevation of the machine as viewed from the left, showing the relative positions of the controlling bail for the adding sectors and parts of its movement controlling mechanism when the main operating handle is pulled slightly forward to the position indi= cated in n'g. 3;

5 is a detail sectional view showing the ac cumulator, an adding sector which has previously made a transfer movement, and the controlling bail for the adding sectors, duringniovement of the parts or the controlling mechanism from the position of Figs. 3 and 4 to that of Fig. i3;

6 is a view similar to Fig. 3, but showing the main operating handle drawn slightly fan that forward to a position at which excess transfor movement of any adding sectors has been taken up and all sectors are aligned in normal nontransfer position, with the accumulator pinions of the accumulator re-meshed with the adding sectors, and the transfer devices re-set, to condition the machine for taking an accurate total;

Fig. l is a view similar to Figs. 3 and 6, but showing the main operating handle drawn forward almost to the end of its forward stroke, with a pin on the accumulator frame shifting cane making initial contact with a non-add control member which is settable by the depression of the non-add key;

Fig. 3 is a detail view showing the relation of said shifting cam and its said pin to said nonadd control member at the end of the forward stroke of the handle;

Fig. 9 isa view similar to Figs. 3, 6 and 7, showing the parts as positioned at the end of a short initial portion of the return stroke of the handle, at which point in the handle movement the depressed non-add key has been just unlatched and restored to normal position, and the accumulator pinions have been meshed from the adding sectors by the action of the cam pin on the set non-add control member out of contact with which the pin is about to pass;

Fig. 10 is a view similar to Fig. 9 showing the positions of the parts when the operating handle has returned about half-way back to norrnal position, showing the non-add control member restored to normal position but the control member set by the total-taking control key still positioned to hold the accumulator pinions out of mesh with the adding sectors;

Fig. ii is a view similar to Fig. 4, but with the parts shown as positioned when the main operating handle is drawn forward into the position indicated in Fig. 8;

Fig. 12 is a view similar to Fig. 5 showing the relative position of'all the adding sectors to the accumulator pinions and transfer device when the handle has been drawn forward to the position shown in 6;

i3 is a fragmentary sectional view, taken on the line l3l3 of Fig. 1, showing certain of the parts of the control mechanism located at the right hand side of the machine;

Fig. it is a fragmentary side elevation of the control mechanism at the right hand side or the machine showing the total key drawn lor-= ward from normal position to condition the machine, shown in Fig. 17, for taking a sub-total upon subsequent rearward setting of the total v;

Fig. 15 is a sectional view taken on the line l5l5 of Fig. 1d;

16 is a sectional view taken on line l d-l6 of Fig. 15;

Fig. 17 is a view similar to Fig. 3 but illustrating, in connection with Fig. 17, a setting of the control mechanism for taking a sub-total;

Fig. 18 is a view similar to Fig. '7 but showing the relation of the parts as the handle arrives nearly at the end of its forward stroke during taking or a sub-total;

Fig. 19 is a sectional view taken on the line ill-4Q of Fig. l; and

Fig. 20 is a sectional view taken entire line 2(l2ll of Fig. l.

The drawings show the invention embodied in the well-known listing adding machine fully illustrated and described in United States Letters Patent No. 1,811,840, granted June 30, 1931, to Glenn J. Barrett, but the specific construction of the improved control mechanism illustrated may be varied and the invention may be embodied in other constructions of adding vmachines of the same general type as that disclosed in said patcut.

The machine of Patent No. 1,811,840

Only so much of the machine of said patent and its mode of operation as is necessary for an understanding of the present invention and its advantages are shown and described, other details of construction and operation of the machine as a whole being fully disclosed in said patent to which reference is made therefor.

The main operating shaft 1 is journalled in the machine frame 2 with its ends projecting beyond the sides of the frame. A main operating handle or vibrating general operator 4 is held to the right hand end of said shaft for manual oscillation of the shaft, said handle being normally spring-restored to the position shown in Fig. 1, and being adapted to be pulled forward to a position slightly beyond that shown in. Fig. 7 and restored to normal to effect a cycle of operation of the machine.

A series of adding sectors or accumulator pinion driving racks 5 are loosely journalled on shaft 1 to oscillate or reciprocate rearward from and back to the position shown in Fig. 2 when the handle is pulled forward and returned to normal position. Sectors 5 have lost-motion pin-andslot connections 6 with type segments 7. Segments 7 are loosely journalled on shaft 1 and are connected by transfer springs 8 with sectors 5 and have shoulders 9 normally engaged by the adding sector control bail 10 to hold the sectors and segments in the position shown in Fig. 2 against the pull of driving springs 11 attached to the segments 7 and a part of the machine frame, with lost-motion connection 6 positioned for a one unit or tooth space relative movement between the sectors and segments in both directions.

Bail 10 is loosely journalled on shaft 1 to rock relatively to said shaft, said bail oscillating first rearward and then forward, under control of a cam fixed on the projecting left hand end of shaft 1, from and back to' the position shown in Fig. 2 on the forward and return strokes respectively of handle 1. This bail control cam 3 has been slightly changed in the improved machine as hereinafter described, but oscillates bail 10 through the usual rock arm 13 journalled on the frame 2 and linked to one of the side arms 12 of the bail through the usual connection 21, said rock arm 13 having the usual antifriction roller 23 coacting with the edge of cam 3. Said cam, both in the old and improved machines, is so shaped that bail 10 remains stationary during a short initial portion of both strokes of handle 1.

Pivoted zero or locking stops 14 are coactive with stop shoulders 7 on type segments 7 to prevent rearward movement of adding sectors of denominational orders for which no digit key plunger has been set and to normally arrest the type segments with the uppermost or cipher type at the printing line, each said stop 14 being movable to inactive position by setting of any digit key plunger 15 for that denominational order. Key plung'ers 15, when set, coact with digit stops 16 on fore and aft movable stop slides 16 in the frame to variably limit the rearward travel of adding sectors 5, said slides being connected by links 17 to the adding sectors, and the set key plungers being locked in set position by the usual key locking slides 18 which lift or release stops 14 in moving to key locking position.

The accumulator or totalizer actuated by the sectors 5 comprises a series of accumulator pinions 26 independently rotatable on a shaft 19 forming part of an accumulator shifting frame 20 fixed on a rock shaft 22 which is journaled in the machine frame for downward rocking of the accumulator frame to carry the accumulator pinions out of mesh with the, adding sectors. A spring 24 connecting frames 2 and 20 normally holds the frame 20 rocked upward with the pinions 26 in mesh with sectors 5. Frame 20 extends through the right hand side of the machine frame 2 and swings down and up from and to normal position under control of the main shaft 1 during operations of handle 4.

The machine is normally conditioned for adding operations when handle 4 and main operating shaft 1 are actuated, by reason of the control of its cycle of operation by the primary or normally active control mechanism comprising cam 3, bail 10, the connections therebetween, spring 24, cam 27 and a contact device on the accumu lator frame 20. Cam'27 is fixed on the projecting right hand end of shaft 1 to oscillate thereframe 2, which stud projects through a movement limiting slot 28 in cam 27. The contact device comprises a lever 30 pivoted about midway its ends on frame 20 at the right hand side of the frame at 31 and carrying at its upper end an antifriction roller 32 which underlies the edge of cam 27. A spring 36 connecting lever 30 and frame 20 normally yieldably holds the upper arm of the lever rocked rearward in effective position against a stud 35 on frame 20, and normally holds an inwardly projecting stop stud 25 on the lower arm of the lever rocked forward and downward away from the lower edge of the right hand side member of frame 20, as shown in Fig. 1, contact roller 32 being normally under low or camming edge portion 27 of cam 27 and out of contact therewith. Edge portion 27 extends forward of roller 32 a short distance and is there followed by a long dwell edge portion 27 of the cam 27.

The parts of the primary control mechanism are so proportioned and normally arranged that when the handle is drawn forward cam edge 27 acts on the contact device to bodily depress it with frame 20 to demesh the sectors 5 and pinions 26, which are thereafter held demeshed by dwell edge portion 27 which engages roller 32 of the contact device just before bail 10 begins to move rearward. Any adding sectors released for movement by setting of digit keys will then move forward differentially to positions determined by the set keys as the handle 4 completes its forward stroke, and their associated type segments 7 will swing up and forward to position the proper type at the printing line. Just as the handle completes its forward stroke, platen 33 on the swinging platen frame 34 is drawn against the types positioned at the printing line, the platen frame being drawn forward and downward on the" forward stroke of the handle and returned 14 to the position shown in Figs. 1 and 2 on the return stroke of the handle, through a link 37 connecting it with a part oscillating with shaft 1.

During the initial part of the return stroke of handle 1, before bail 10 begins to move forward to pick up and restore to normal position the active adding sectors and type segments, cam 27 starts back to normal position and, by reason of the frictional drag of dwell edge 27 on roller 32 (assisted preferably by a shallow notch 27 in dwelledge 27) immediately rocks the upper end of lever 30 with roller 32 forward against the pull of spring 36 until roller 30 is forward of a line through shaft 1 and the lever pivot, whereupon the stronger spring 24 snaps the accumulator frame upward to normal position, meshing the pinions 26 with sectors 5 just before the active sectors and bail 10 begin their movements back to normal position. During the rest of the return stroke of handle 4 the active sectors will drive their associated pinions in accordance with the distances they moved forward to carry into the accumulator or totalizer the amount last set up in the keyboard, the set keys being automatically released and restored as the returning handle approaches normal position.

The normal return movement of active adding sectors is arrested and its extent determined by the engagement of stop fingers 38 on the sectors with stop lug 39 on the rearwardly extending arms of transfer levers 40 pivoted on a rod 41 forming part of frame 20. The return movement of bail 10 is sufiicient to distend the transfer springs 8 after arrest of a sector by its transfer lever, this being permitted by pin-and-slot connection 6 as shown in Fig. 2. The transfer of tens is effected by a cam 42 on the lower order accumulator pinion wiping rearward over a nose 43 on the forward arm of the transfer lever whose stop lug 39 arrests the sector for the next higher order accumulator pinion, so that stop finger 38 of said sector can pass forward under the stop lug 39 of the transfer lever to permit the released sector to move one unit space past normal position under pull of its distended transfer spring 8 which contracts and takes up the lost motion at the forward end of pin-and-slot connection 6. Any tripped transfer lever is latched in tripped position by a lug 44 on its pendent arm snapping into a notch 45 of one of a series of latch levers 46 pivoted in frame 20. A common return spring 47 connects each transfer lever and its associated latch lever. Since bail 10 does not begin to move on the next forward stroke of the handle 4 until just after the accumulator frame 20 has been lowered by cam 27 and contact device 3032, the accumulator or totalizer is not actuated on this stroke of the handle but stop finger 38 of any active sector which has made a transfer movement is withdrawn from under lug 39 and all tripped transfer levers are unlatched by the lowering of frame 20 which causes unlatching of latch levers 46 by pressing any active latch levers against a horizontal rod 48 forming part of main frame 2. Any tripped transfer lever for an inactive sector also can assume normal position at the end of the forward stroke of the handle since the rearward throw of bail 10 is such as to push backward into normal position any inactive sector which has made an excess forward movement of one step to transfer a ten.

Improved normally inactive or auxiliary control mechanism While operation of the machine for the taking of and leaving an accumulator total in the accumulator or totalizer, commonly called taking a sub-total, and for the taking of an accumulator total and clearing the accumulator, commonly called taking a final or grand total, is attained by the provision of two normally inactive or auxiliary control devices, namely a totalizing control lever 49 and a non-add control lever 50, similar to those of the machine of the patent heretofore referred to and operating in the same way in connection with the main or normally active control mechanism above described of said machine, in the improved machine improved manually and automatically operating means are provided for governing these auxiliary control devices and novel means are provided for eliminating the necessity of making an idle operation of the handle or "general operator prior to taking a sub-total or final total. The latter means comprises a novel third normally inactive control device rendered effective by actuation of the novel means for controlling the setting of the machine for taking totals and sub-totals. 1

Control lever 49 is pivoted on a stud 51 at the outer face of the right hand side of frame 2 to rock in either direction from its normal inactive position shown in Fig. 1 against the pull of return spring 68 connecting lever 49 to stud 71 on frame 2, and has the two latch pins or studs 52 and 53 coactive with arcuate inwardly projecting latch flange 84 fixed on cam 27, pin or stud 54 engageable by control lever 50, and pin or stud 55 engageable by a total key lever, accumulator frame depressing cam portion 69, and throw-out finger 70 for control device 3032, all as in the prior machine, but in the present machine the non-add key kick-off pin 277 disclosed in the prior patent is omitted from lever 49, and the operative connection of the total key lever with pin 55 is changed.

Control lever 50 is pivoted on frame 2 at 83 at the right hand side of the frame outside of lever 4C9, has arms 56 and 57 coacting respectively with pin 54 of lever 49 and a pin 58 projecting out from cam 27, and is connected by spring 59 to the lower end of non-add key plunger 60, all as in the prior machine; The non-add key plunger 60 is guided by a slot 61 in a plate 62 fixed to the right hand side of the machine frame 2, and is further guided by a pivoted connection 63 at its lower end with a lever 64 fulcrumed on shaft 1, so that said plunger may be pressed endwise downward from its normal position of Fig. 1 against the pull of a return spring 65 which connects the plunger to plate 62 with stop finger 67 of the plunger normally engaged under the plate, as in the prior machine.

In the improved machine, however, locking notch 66 is located too high in the non-add key plunger to receive the edge of plate 62 at the forward end of slot 61 when the non-add key, plunger is depressed to its set position determined by the overhanging stop edge portion 66 of slot 66, so that said plunger, if depressed by direct finger pressure thereon is normally free to return to idle position and lever 50 will also return to idle position, and automatic means is now provided operating under control of the general operator to lock this key plunger in set position and re- This automatic locking means comlease it. prises an endwise sliding locking bar 81 through guide slots in which pass a screw 123 and the stud 71, the head of the screw and a collar 72 on the stud holding the bar loosely against the outer face of the frame 2 at the right hand side of the machine to reciprocate above plate 62. Locking bar 81 has a locking lug 73 at the front of the non-add key plunger normally underlying stop edge 66 of the plunger and adapted to be I drawn into notch 66 by a spring 74 which connects the bar and stud 71 and constantly tends to draw the bar to locking position. A look releasing lever loosely pivoted on a pivot bolt 75 projecting from frame 2 has an arm 76 provided with 8. lug 77 for engaging the rear face of a lug '78 on the rear end of the locking bar, and a releaselever-rocking pin or stud 79on cam 27 normally engages the front edge of an arm 80 of the lock releasing lever and holds it in the position shown in Fig. 1 to maintain the locking bar in released position. Pin 55 on lever 49 is also adapted to be rocked rearward against an arm 82 of the release lever to actuate the same to kick off the locking bar, as hereinafter more fully described.

Preferably, and for the purposes hereinafter described, a detent lever 85 is provided by means of which the automatic latching down and release of plunger 60 may be prevented during a cycle of operation of handle 4 started with the plunger depressed. Detent 85 is pivoted on bolt '75 and has a spring arm tightly frictionally clamped against frame 2, by the action of a collar 86 on the bolt and a nut 87 on said bolt to frictionally hold the detent in pivotally shifted or adjusted position even against the thrust of locking bar 81 and its actuating spring '74. The other or forward arm of detent 85 is provided with an outwardly projecting stud 88 which engages behind lug '77 of the locking bar release lever, and a detent restoring pin 99 is provided on cam 27 for engaging arm 80 of the release lever and automatically rocking the release lever to restore the detent to its normal idle position shown in Fig. 1 during the final portion of the forward stroke of the handle 4.

A total-taking control key-lever or total key lever 89 is journalled adjacent its lower end on bolt '75 and is normally yieldably held in the idle or neutral position thereof shown in Fig. l by a return spring 90 connected to said lever and stud '71. This total-taking control key lever is free to be rocked in opposite directions beyond its said neutral position to two active or operation control setting positions determined by a stop pin 91 on frame 2 projecting through an arcuate stop slot 92 in said lever. Total-taking control key lever 89 is swingable forward to operate with its forward edge on stud 88 of detent 85 to shift the detent 85 from idle position to a position in which it will hold the latch bar out of action during a cycle of operation of handle 4.

Key lever 89 has a single pendent contact finger 93 located behind stud 55 of total control lever 49 for engagement with said stud to rock lever 49 only upon rearward movement of key lever 89 from neutral position, forward movement of key lever 89 being ineffectual to rock lever 49. Contact finger 93 has a lug 94 on its lower end located behind a lug 95 on the upper part of the hub of a non-add key-plunger-setting or depressing lever 96 loosely pivoted on the same frame stud 51 as lever 49. Lever 96 is held on the stud by a collar 97 which is locked to the stud by a suitable set screw, and said lever extends forward from its hub and rests on top of a horizontal pin 98 that projects inward from the nonadd key-plunger 60. Rearward setting of key lever 89 rocks lever 96 far enough to depress key plunger 60 to its set or active position in which the locking lug 73 is opposite and may enter locking notch 66 in plunger 60 to lock the plunger in set position. At this point it may be stated that lever 49 has a cam edge 100 coactive with a stud 101 on a rocking stop-releasing frame 102 to rock said frame upward and rearward from its normal position of Fig. 1 to move all the normal locking stops 14 to inactive position when lever 49 is rocked by rearward setting movement of the total key lever 89, for freeing all the adding sectors and type segments. all as in the machine of the prior patent.

Rearward setting of the total key lever 89 also sets or conditions for action the third normally inactive or auxiliary control device, heretofore referred to, which functions to render it unnecessary to make a so-called iidle" or preliminary cycle of movement of handle 4 prior to taking a final total or sub-total. This auxiliary control device comprises a cam plate 103 fixed to the outer face of cam 27 at 104 and 105 and extending along the leading portion of cam edge 27" of cam 27 almost to dwell edge 2'7 of cam 27. The lower or working edge of cam plate 103 extends below edge 2'7 and consists of two downwardly converging low or camming edge portions 106 and 107 connected by a high or dwell edge portion 108 which, like dwell edge 2'1 of cam 27. is concentric with shaft 1. Plate 103 lies in a vertical plane to the right or outside of the plane in which lies the contact roll 32 of the normally active contact device 30-32 coactive with cam 27, and the edge portions 106, 107 and 108 of plate 103 are coactive with a second and normally inactive contact device 109-410 on the accumulator shifting frame 20.

The normally inactive contact device comprises an anti-friction roller journalled on the upper arm of a lever 109 and 110 engageable by the cam plate, when lever 109 is shifted to active position, to cause demeshing and remeshing of the accumulator pinions and adding sectors. Lever 109 is pivoted at 111 on the same side of frame 20 as device 30-32 and is normally rocked to and held in inactive position as shown in Fig. 110 1 by a spring 112 connecting the lower end of the lever to stud 35. When the total key lever is shifted rearward, lever 49 is rocked counterclockwise as viewed in Fig. 1, and contact device 109-1l0 is rocked to set or active position by means of a thrust link 113 pivotally connected at 114 to lever 49 and having a longitudinally slotted rear end 115 straddling the axle 116 of roller 110 on lever 109. Slot 115 permits link 113 to move during a counter-clockwise swinging 01120 lever 49 in non-add and final total-taking operations of the machine. Lever 109 has a forwardly extending stop arm 117 engageable under stud 35 to arrest said lever in its vertical active position.

Bail control cam Bail control cam 3 has two terminal dwell portions 118 and 119 as in the case of the corresponding cam of the prior patented machine and functions in the same manner on the bail-moving means as the prior cam except that, instead of the terminal dwell portions being connected by a continuous active or camming portion as in the prior cam, a short intermediate dwell portion 120 is provided close to dwell portion 118, so that dwell portion 118 is followed by a short active portion 121, and a long active portion 122 connects dwell portions 120 and 119. This intermediate dwell portion is provided as a safety factor and may be dispensed with as the improved machine if properly constructed will accurately operate with a cam having a single intermediate active portion as in the case of the prior cam. Active portion 121 is just long enough to permit sufficient movement of the bail for a one tooth space movement of an adding sector.

Adding operation The adding operation is the same as in the machine of the patent and hereinbefore briefly 150 I 1,949,440 described, except of course for the temporary stoppage of ball 10 as dwell portion 120 of cam 3 passes over roller 23, which does not affect the adding action.

Non-add operation Except for the improved latching and releasing the non-add key plunger, a non-add operation, or listing without adding, operation is controlled and performed as in the prior patented machine and need only be briefly described. When a non-add item is set up in the keyboard, key plunger is depressed and held downuntil the hand is started and slightly advanced, whereupon stud '79 leaves arm of the latch release lever for the key plunger latch 81 which immediately moves rearward to engage lug 73 in notch 66 to lock the plunger in its depressed or set position permitting removal of the operators finger from the heyplunger without disturbance of the non-add setting of the auxiliary control means. Setting of plunger 60 rocks non-add control lever 5!) into the same position as shown in Fig. 3. The remainder of the operation is the same as in adding during the forward stroke of the handle except that pin 58 engages arm 57 and idly rocks lever 50 in the same manner as indicated in Figs. '7 and 8. On the return stroke of the handle, however, while notch 27 immediately throws contact device 30 32 to inactive position to permit the accumulators to mesh before bail 10 starts hack to its normal position, before said bail does start the pin 58 engages under arm 57 and rocks lever 50 counterclockwise beyond its set position into the same position as shown in Fig. 9, thereby causing arm 57 of lever 50 to rock lever 49 clockwise as in Fig. 9. This rocking of lever 49 causes cam portion 69 thereof to engage and immediately throw down accumulator frame 20 to demesh the accmulator before ball 10 starts hack to normal position, thus preventing adding of the set-up item printed on the forward handle stroke into the accumulator. This rocking of lever 49 also causes pin 55 to rock the latch release lever to latch releasing position so that the non-add key is immediately restored to normal position, and also causes locking flange 84 of cam 27 to pass above pin 53 on lever 49 during the return stroke of the handle to-hold the accumulator demeshed until the bail 10 reaches normal position and thereafter release lever 49 to return to its normal position-as the handle finishes its return stroke.

The automatic latch for the non-add lrey controlled by the main operating mechanism avoids the disadvantages of a non-add key that must he held set by hand until the parts controlled thereby have functioned properly, as well as the disadvantages of a non-add key which is latched automatically as it moves into set position. By pulling the free key 89 forward before depressing the non-add hey, the automatic latch may he looked out of action by the detent for one cycle of operation of the machine, but the latch will be rendered efiective for action on a subsequent cycle automatically hv reason of the fact that pin 99 will rock the latch release lever and restore the detent 85 to normal idle position at the end of the first forward stroke of the handle following pulling forward of key 89. Key 89n1ay he pulled forward to release the latch and permit the nonadd key to return to normal position after having been latched down. This is advantageous to cor= rect erroneous or inadvertent settings of the auxiliary control mechanism. Arr erroneous nonadd or final total setting may be corrected by pulling forward key 89 at any time before the handle starts its return stroke.

Final total taking operation To take an accumulated total and clear the accumulator (final total taking omration), key lever 89 is simply pushed backward to its rearwardly set position and held until handle 4 hm been advanced a slight distance (far enough for locking flange 84 of cam 2? to pass down in front of latch pin 52 of control lever 49), whereupon lrey lever 89 may be released and allowed to return to normal position and the handle is then drawn all the way forward and returned to normal position. The rearward setting of key lever d9 rocks lever 4% into the set position shown in Fig. 3, in which position it is held latched by flange 84 and pin 52 throughout the period of movement of hail 10 on the forward stroke of the handle and released at the end of said handle stroke as in the prior patented-machine. a so, as in the prior machine, cam edge 100 of lever ell acts on stud 101 rock. frame 102 to elevate all the normal locking stops 14 to inactive position for freeing all the type segments and adding sectors, and finger '70 of lever d9 rocks con-' tact device 3l32 to its inactive position, as shown Fig. 3. in the improved machine, this rearward setting of key lever 89, however, performs the new and additional functions of (1) automatically depressing non-add key plunger so to set position by means of setting lever 96', in. which position plunger 69 is also automatically locked by bar 8i, as shown in Fig. 3, upon the same slight initial forward movement of the handle that latches the control lever 49- set position, and (2) shifting control device 109 and llil to active position through lever 49 and link: H3, in which position this device is locked while lever 29 is looked, as shown in Fig. 3. On the forward stroke of handle 4., just after flange 84: begins to pass in front of pin 52, edge 106 of cam plate 103 acts on contact device l09-ll0 to depress frame 20 to accumulator demeshing position, and dwell edge lilo of said cam plate becomes engaged with said contact-device to hold the accumulator demeshed just before dwell edgellil of cam it leaves roller 23 of bail actuating arm 13 and just hefore the hall ill begins to move downward and rearward, as shown in 3 and During movement of the handle from the position of Figs. 3 and 4 to that of Figs. 6 and ii hall 16 moves slightly as edge 121 of cam 3 passe roller 23 and stops while dwell edge 12G passes said roller. This initial slight movement of hail lil is of just sufiicient extent for a one tooth space movement of the adding sectors 5, and during this movement any of said sectors have made an excess forward movement for r of tens on the last preceding operation will he forced hack to normal position by the movement of their respective driving segments 7 permitted by the short hail move-. ment, hut any sectors which are already ing in normal position will not move during the short movement of their driving t me segments which sh'nply swing enough t take up the lost-motion existing (as shown in Fig. l) forward end of their pin-and-slo; connections 6 with these sectors. which was in transfer position is shown moved almost to its normal position which it reaches the instant hefore roller 23 passes oi edge 121 of cam 3. Since the demeshing movement of frame 20 releases any active transfer lever latch.

in Fig. 5 an sector 46, the active transfer levers 40 return to normal position as soon as their associated adding sectors are restored to normal position. The excess transfer movement of any adding sectors is thus taken up and their transfer devices restored to normal position, as shown in Fig. 12. Dwell edge 108 of cam plate 103 then passes off contact device 109110, while dwell edge 120 of cam 3 is passing over roller 23 and the ball is stationary, to permit re-meshing of the accumulator with the adding sectors while all said sectors are stationary and in their normal position of Fig. 1, and the re-meshed accumulator and sectors are now engaged, as shown in Fig. 12, in condition for taking an accurate total without the necessity of having made a cycle of operations of handle 4 prior to setting the total control mechanism. As the handle moves on in its forward stroke, lever 49 is released and returns to normal position shortly before handle 4 reaches the end of its forward stroke, as shown in Fig. '7, and while ball 10 is stationary due to dwell 119 of cam 3 passing over roller 23. During the final part of the forward stroke of the handle, pin 58 idly passes lever 50 as shown by Figs. '7 and 8. While the bail moved by reason of the coaction of roller 23 and the active edge 122 of cam 3, all the accumulator pinions were reversely rotated to their zero position (that in which they stand as shown in Fig. 1) to set the type segments to print at the end of the forward handle stroke the amount which stood accumulated. On the return stroke of the handle, before cam edge 122 begins to pass roller 23 and bail 10 begins to move, pin 58 engages and rocks lever 56 to swing the lever 49 clockwise (as viewed in Fig. 9) from its normal position into the position occupied thereby in Fig. 9. This movement of lever 49 causes its cam portion 69 to act on a part of the accumulator shifting frame 20 as in the prior machine and depress said frame to demesh the accumulator before the sectors begin to move back to normal position. As in the prior machine flange 84 passes behind pin 53 to lock lever 49 in this rocked position before pin 58 passes oif arm 57 of lever 50, thereby holding the accumulator demeshed throughout return movement of bail 10. Flange 84 releases lever 49 to return to its normal position during the final part of the return stroke of the handle in which the bail is stationary, as in the prior machine. A total is thus taken and the accumulator cleared. During the rocking of lever 49 by lever 50 at the beginning of the return stroke of the handle 4, it will be noted that, as shown in Fig. 9, pin 55 rocks the release lever to cause arm '76 thereof to push latch bar 81 forward and release the set key plunger 60 which snaps back to normal position. It will also be noted that key lever 89 is never looked and can always be pulled forward.

Sub-total taking operation To take a sub-total (total taking without clearing the accumulator) it is simply necessary to first pull key lever 89 forward as shown in Fig. 14, and to then push it backward to final total taking set position and hold it there until the handle is started forward far enough to lock lever 49, as shown in Fig. 17, whereupon the key lever may be released, and to thereafter complete the forward handle stroke and return the handle to normal position. The initial forward setting of key lever 89 rocks detent 85 into position to hold latch bar 81 from moving to latching posi- 75 tion when the hand e is startedforward, as

be apparent from Figs. 14 and 17. The subsequent rearward setting of lever 89 sets lever 49, and also key plunger and its connected lever 50, as in the final total taking operation, but plunger 60 and lever 50 are not locked by bar 81 and will return to normal idle position when key lever 89 is released after the slight initial starting movement of the handle. The parts act to restore the transfer, set the accumulator at zero, and print the total on the forward stroke of the handle as in the final total taking operation, but since lever 50 is not in active position the lever 49, which returns to normal idle position near the end of the forward stroke of the handle, as shown in Fig. 18, remains in its idle position on the return stroke of the handle just as in an adding operation, so that the accumulator remains in mesh with the adding sectors on the return stroke of the handle to restore the accumulated amount into the accumulator. At the end of the forward stroke of the handle, pin 99 on cam 2'1 coacts with the arm 80 of the release lever to restore detent to its normal idle position, as shown in Fig. 18, thereby automatically reconditioning latch 81 for automatic locking action.

Since key lever 89 is always free to be pulled forward, it is possible to change an erroneous final total setting to a correct sub-total setting at any time before the handle 4 begins its return stroke in total taking since, if key lever 89 is set to take a final total and the handle started forward far enough to latch lever 49, a sub-total may be taken instead of a final total by simply pulling key lever 89 to its forwardly set position, thereby unlatching non-add key plunger 60 which returns with lever 50 to idle position before lever 50 performs any function. If desired, the taking of a sub-total may always be controlled in this manner, but the simpler method of control first described is preferable.

What we claim is:

1. In a key-set adding machine, the combination of a general operator, mechanism normally operable by said general operator to add set-up items, a control key shiftable in opposite directions from a. normal idle position, and normally idle mechanism adapted for conditioning by movement of said key first in one direction and then the other from the idle position of the key to cause the adding mechanism to operate to register an accumulated total and leave the same accumulated in the adding mechanism when the general operator is actuated, said normally idle mechanism being adapted for conditioning by movement of said key solely in one of said directions from idle position to cause the adding mechanism to operate to register an accumulated total and clear the machine when the general operator is actuated.

2. An adding-machine having adding mechanism including transfer means, normally inantive means for varying the operation of the adding mechanism for the taking of sub-totals and final totals, normally inactive means for resetting any tripped transfer means of the adding mechanism in connection with taking totals or sub-totals, and a single normally idle control key shiftable in opposite directions from idle position and adapted when shifted in one of said directions to condition both said normally inactive means for coaction with the adding mechanism for changing its normal operation to a final total taking operation and adapted to condition both said normally inactive means for coaction with the adding mechanism for changing its normal 150 operation to a sub-totaltaking operation when shifted in said one directionatter having first been shifted in the opposite direction.-

3. An adding machine as claimed in claim 2, in which said control key is yieldably held in normal position and always free to return thereto when released, and having means controlled by the adding mechanism for locking both said normally inactive means in active positionuntil they have functioned as predetermined by the manipulation of the control key.

4. An adding machine having an accumulator ,comprising accumulating pinions, adding racks for actuating said pinions, general operating mechanism for moving said racks in opposite directions during a single cycle of operation of said general operating mechanism and normally effecting meshing of said racks and pinions during an intermediate portion of only one of said opposite movements of the racks for adding items in'the accumulator, normally inactive means adapted for coaction with said general operating mechanism for effecting meshing of said racks and pinions during the same intermediate portion of rack movement and the corresponding intermediate portion of the reverse rack movement for taking an accumulated sub-total, a second normally inactive means adapted for coaction with the first normally inactive means and the general operating mechanism to effect meshing of the racks and pinions during rack movement only throughout said corresponding intermediate portion of the reverse rack movement for taking a final total and clearing the accumulator, a spring-returned control key normally held in an intermediate idle position and shiitable in one direction therefrom to move said first-mentioned normally inactive means into active position for coaction with the general operating mechanism, means connecting the first normally inactive means for movement of the second normally inactive means into active position by the first when the latter is moved by said movement of the control key, general operating mechanism controlled means for automatically latching said two normally inactive means in active position upon the making of a short initial portion of the cycle of operation of said mechanism and automatically releasing the same before the completion of said cycle after functioning thereof, and means operable to prevent said automatic locking of said second normally inactive means by preliminary movement of said control key in the opposite direction from idle position before being moved in the first-mentioned direction.

5. An adding machine having an accumulator comprising accumulating pinions, adding racks for actuating said pinions, general operating mechanism for moving said racks in opposite clirections during a single cycle or" operation of said general operating mechanism and normally efiecting meshing of said racks and pinions dilling an intermediate portion of only one of said opposite movements of the racks for adding items in the accumulator, normally inactive means adapted for coaction with said general operating mechanism for effecting meshing oi said racks and pinions during the same intermediate portion of rack movement and the corresponding intennediate portion of the reverse rack move-' ment for taking an accumulated sub-total, a second normally inactive means adapted for coaction with the first normally inactive means and the general operating mechanism to effect meshing of the racks and pinions during rack movement only throughout said corresponding intermediate portion of the reverse rack movement for taking a final total and clearing the accumulator, a spring-returned control key normally held in an intermediate idle position and shiftable in one direction therefrom to move said first -mentioned normally inactive means into active position for coaction with the general operating mechanism, means connecting the first normally inactive means with the second normally inactive means for movement of the second said means into active position by the first when the latter is moved by said movement of the control key, g'eneral operating mechanism controlled means for automatically latching said two normally inactive means in active position upon the making of a short initial portion of the cycle of operation of said mechanism and automatically releasing the same before the completion of said cycle after functioning thereof, said key being movable aiter said looking to the opposite side of its idle position to release the second normally inactive means, and said second means being arranged to function only on the last half of the cycle of operation of the general operating mechanism.

6. An adding and listing machine having means for adding and listing items, normally inactive non-add means for coaction with said adding and listing means to prevent adding of a listed item, normally inactive control means for coaction with the adding and listing means for printing an accumulated total without clearing the machine, a spring-returned non-add key for positioning the non-add means in active position, an oppositely shiftable total-taking control key spring-returned to an intermediate idle position and operable in one direction for positioning said control means in active position, means operable by said control-means-positioning movement of the control key for actuating the non-add key to position the non-add means in active position, said non-add means being coactive when sopositioned to clear the accumulated total after printing thereof when the adding and listing means are operated, means controlled by initial operation or the adding and listing means for automatically latching both the non-add key and control means active position until they have functioned and releasing both said means after they have functioned, and means operable by a preliminary movement of said control key to the opposite side of its idle position before movement in said specifled one direction to prevent said automatic latching of the non-add key only, whereby the non-add key and means may return to idle position upon release of the control key after a setting of the non-add and control means and starting of operation of the adding and listing means to permit printing of a sub-total.

7. An adding and listing machine as claimed lltl claim 6, having normally inactive transfer device resetting means movable to active position by active positioning of said control means and. held in active position by the said automatic latching of the control means and releasable therevrith, said resetting means being coactive with the adding and listing means to insure resetting of all transfer devices included in the adding and listing means without affecting the accumulated total.

8. "in an adding and listing machine, the corn- 7 chine respectively to list a sub-total and to list an item without accumulating it in the machine, said separately settable means being adapted when jointly set to condition the machine for listing a final total, means normally yieldably holding the non-add control key in idle position, means normally yieldably holding the total-taking control key in an idle position from which it is movable in two opposite directions in one of which its movement sets the sub-total control means, means operable by the latter movement of the total-taking control key for setting the nonadd key, separate means controlled by the general operator for latching the set non-add key and set sub-total control means in set position without latching the total-taking control key, and means operable by movement of the total control key to the opposite side of its idle position to prevent latching operation of the non-add key latching means during a single subsequentoperation of the general operator.

9. In an adding and listing machine, the combination of adding and listing means, a general operator therefor, a total-taking control key, a non-add control key, control means separately settable by said keys for conditioning the machine respectively to list a sub-total and to list an item without accumulating it in the machine, said separately settable means being adapted when jointly set to condition the machine for listing a final total, means normally yieldably holding the non-add control key in idle position, means normally yieldably holding the total-taking control key in an idle position from which it is movable in two opposite directions in one of which its movement sets the sub-total control means, means operable by the latter movement of the total-taking control key for setting the non-add key, separate means controlled by the general operator for latching the set non-add key and set sub-total control means in set position. without latching the total-taking control key, and means operable by movement of the total key to the opposite side of its idle position for manually unlatching the non-add key after said automatic latching thereof.

10. An adding and listing machine having two normally inactive control members, a control key movable in one direction for jointly setting said members to condition the machine for taking a final total, a non-add key for independently setting one of said control members to condition the machine for listing without adding, an oscillating general operator for actuating the machine normally to add and list items, the control member operated by the non-add key being effective during the first part of the return stroke of the general operator and active during said part stroke to actuate the other control member, gen eral operator controlled means for-latching said other control member in set position and releasing it, means controlled by the beginning of the initial stroke of the general operator to automatically latch the non-add key when held set by the control key, said last-mentioned latching means being operable by said other control member to release the non-add key when the latter member.

is actuated by the non-add key operated control member, and means operable to prevent latching of the non-add key by preliminary movement of the control key before and in a direction opposite to a movement thereof which jointly sets the control members.-

11. An adding and listing machine having two normally inactive control members, a control key movable in one direction for jointly setting said members to condition the machine for taking a final total, a non-add key for independently setting one of said control members to condition the machine for listing without adding, an oscillating general operator for actuating the machine normally to add and list items, the control member operated by the non-add key being eflective during the first part of the return stroke 0! the general operator and active duringsaidpart stroke to actuate the other control member, general operator controlled means for latching said other control member in set position and releasing it, means controlled by the beginning of the initial stroke of the general operator to automatically latch the non-add key when held set by the control key, said last-mentioned latching means being operable by said other control member to release the non-add key when the latter member is actuated by the non-add key operated control member, and means whereby the control key may be moved to unlatch the non-add key during an operation of the general operator started while the control members are held jointly set by the control means.

12. 'An adding and listing machine having two normally inactive control members, a control key movable in one direction for jointly setting said members to condition the machine for taking a final total, a non-add key for independently setting one of said control members to condition the machine for listing without adding, an oscillating general operator for actuating the machine normaly to add and list items, the control member operated by the non-add key being effective during the first part of the return stroke of the general operator and active during said part stroke to actuate the other control member, general operator controlled means for latching said other control member in set position and releasing it, means controlled by the beginning of the initial stroke of the general operator to automatically latch the non-add key when held set by the control key, said last-mentioned latching means being operable by said other control member to release the non-add key when the latter member is actuated by the non-add key operated control member, means operable to prevent latching of the non-add key by preliminary movement of the control key before and in a direction opposite to a movement thereof which jointly sets the control members, and normally inactive transfer-resetting means, rendered effective by the setting of that one of the control members which is directly set by the control key, for resetting any tripped transfer means during the first part of the initial stroke of the general operator.

13. In an adding machine, a general operator, and a spring-retumed total-taking control key normally free to move in opposite directions from normal idle position and movable in first one direction and then the other to set the machine to take a sub-total when the general operator is actuated, and which, when moved in one of said directions only, sets the machine for taking a final total when the general operator is actuated.

GLENN J. BARRE'I'I'. CHARLES H. BRADT. 

